Moving an entity (or what looks like one entity) in AutoCAD can sometimes be a challenge. I frequently get data from outside vendors websites. In the illustration below, both entities look the same. As I have noted, however, there are many more items in the one on the right side. This is how I received the data from the vendor. Usually the multiple items are a result of exporting a 3D item to a 2D drawing.
An unexpected result, with a bit of clean-up to do! The selection window did not capture everything. Some will say that "grouping" the items does the same thing. Yes, that will produce similar results, however, if I want to copy the blocked data to another drawing, I can simply copy the blocked item to the clipboard, and paste normally into another drawing. I can also wblock out the single item to my computer for future use.
Groups are defined in the drawing they are created in and will no longer be grouped when inserted into another drawing.
You can add this Paste as Group lisp macro to your Paste drop-down to paste objects from the clipboard as a new group into a drawing.
^C^C_pasteblock;\(setq LstBlk(vla-get-Name (vlax-ename->vla-object (entlast))));_explode;_last;_-group;_create;*;;_previous;;(command "-purge" "B" LstBlk "N")
(setq LstBlk nil)
It actually Pastes the objects as a block, explodes the block placing the objects into a group then purging the block leaving only the group. I use it all the time as toggling group selection On/Off with Ctrl+H makes modifying objects much easier than using the Block Editor.
Note: as (vl-load-com) must be loaded for Visual Lisp commands to load most who use it add it as the first line of acaddoc.lsp or include it in a mnl or other file that is loaded whenever a drawing is opened.